61901
618 & 619 Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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61901 Bearing Product Overview & Core Advantages
The 61901 is a miniature deep groove ball bearing designed for applications demanding high precision and compact design. As a single row, open type bearing, it excels in handling primarily radial loads and is characterized by its extremely low cross-section relative to its bore diameter. Manufactured to a P6 tolerance class, it offers superior running accuracy, making it an ideal choice for high-speed, high-reliability applications where space is at a premium. Its compliance with ROHS and REACH standards further ensures its suitability for modern, environmentally conscious industries.
61901 Bearing Model Code Explained, Specifications & Naming Convention
| Prefix / Suffix | Technical Meaning | Significance & Advantage |
|---|---|---|
| 619 | Series Designation | Indicates a miniature deep groove ball bearing series with a particularly thin cross-section. |
| 01 | Bore Diameter Code | Specifies a 12 mm bore diameter. |
| [No Seal Suffix] | Open Seal Type | Allows for high-speed operation and facilitates easy re-lubrication or custom lubrication schemes. Requires a clean operating environment. |
61901 Bearing Structural Features & Performance Benefits
The performance of the 61901 is a direct result of its meticulous design and material selection:
- High Precision & Low Noise: Manufactured to P6 tolerance with a standard CN radial internal clearance, this bearing ensures smooth, quiet, and vibration-free operation, which is critical for sensitive applications.
- Optimized for High Speeds: The open design minimizes friction from seals, while the stainless steel cage provides excellent guidance and stability, contributing to its high limiting speed of 40,000 rpm.
- Robust Load Capacity: Despite its miniature bearing dimensions (12mm bore, 24mm OD, 6mm width), it offers a substantial dynamic load rating of 654 lbf and a static load rating of 328 lbf.
- Durable Material Construction: Rings and balls made from chrome steel provide high hardness and wear resistance, ensuring a long service life under demanding conditions.
61901 Bearing Typical Application Areas
The 61901 miniature deep groove ball bearing is engineered for precision applications across various sectors, including:
- Precision Instrumentation: Optical encoders, measuring devices, and sensitive laboratory equipment.
- Small Electric Motors: High-speed spindle motors for drills, grinders, and dental handpieces.
- Office Automation: High-speed scanners, printers, and copiers.
- Robotics and Automation: Joints and guides in small robotic arms and precision linear actuators.
